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Evaluation of Interaction Between Geosynthetics and Marginal Cohesive Soils from Pullout Tests
Understanding the interaction mechanisms between soil and geosynthetics is a key factor in the design and analysis of reinforced soil structures. The soil-geosynthetic interaction can be determined by conducting direct shear or pullout tests. Most of the research efforts have been focused on investigating the pullout behavior of reinforcement in granular fills. Recently, marginal fills with poor engineering characteristics have gained increasing interests due to the cost effectiveness of utilizing the available cohesive soils in the construction of reinforced retaining walls and embankments. This raises the need for the evaluation of the interaction parameters between geosynthetics and cohesive soils. To do so, series of reduced-scale and full-scale (field) pullout tests were carried out on instrumented reinforcement intrusions in cohesive backfill by the Louisiana Transportation Research Center. This paper presents the results of laboratory and field pullout tests programs conducted on different geosynthetic reinforcements in marginal cohesive backfill. The results presented in this paper include the evaluation of coefficient of interaction (Ci) between different geosynthetics and the cohesive backfill, the variation of the pullout resistance with overburden depth, and a comparison between the laboratory and field pullout results.
Evaluation of Interaction Between Geosynthetics and Marginal Cohesive Soils from Pullout Tests
Understanding the interaction mechanisms between soil and geosynthetics is a key factor in the design and analysis of reinforced soil structures. The soil-geosynthetic interaction can be determined by conducting direct shear or pullout tests. Most of the research efforts have been focused on investigating the pullout behavior of reinforcement in granular fills. Recently, marginal fills with poor engineering characteristics have gained increasing interests due to the cost effectiveness of utilizing the available cohesive soils in the construction of reinforced retaining walls and embankments. This raises the need for the evaluation of the interaction parameters between geosynthetics and cohesive soils. To do so, series of reduced-scale and full-scale (field) pullout tests were carried out on instrumented reinforcement intrusions in cohesive backfill by the Louisiana Transportation Research Center. This paper presents the results of laboratory and field pullout tests programs conducted on different geosynthetic reinforcements in marginal cohesive backfill. The results presented in this paper include the evaluation of coefficient of interaction (Ci) between different geosynthetics and the cohesive backfill, the variation of the pullout resistance with overburden depth, and a comparison between the laboratory and field pullout results.
Evaluation of Interaction Between Geosynthetics and Marginal Cohesive Soils from Pullout Tests
Abu-Farsakh, Murad Y. (Autor:in) / Farrag, Khalid (Autor:in) / Almoh'd, Izzaldin (Autor:in) / Mohiuddin, Ather (Autor:in)
Geo Jordan Conference 2004 ; 2004 ; Irbid, Jordan
Geo Jordan 2004 ; 299-310
11.06.2004
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Evaluation of Interaction Between Geosynthetics and Marginal Cohesive Soils from Pullout Tests
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